Mouthparts and gills of Siphlonurus davidi nymph. A labrum B right mandible C left mandible D maxilla E hypopharynx (dorsal view on left; ventral view on right) F labium (dorsal view on left; ventral view on right) G–M gills 1-7 (double lamellae of gills separated) N claw

 
 
  Part of: Han Y-K, Zhang W, Hu Z, Zhou C-F (2016) The nymph and imago of Chinese mayfly Siphlonurus davidi (Navás, 1932). ZooKeys 607: 37-48. https://doi.org/10.3897/zookeys.607.9159